64506668 has 6 divisors (see below), whose sum is σ = 112886676. Its totient is φ = 32253332.

The previous prime is 64506623. The next prime is 64506677. The reversal of 64506668 is 86660546.

64506668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×64506668² = 8322220432924448, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8063330 + ... + 8063337.

It is an arithmetic number, because the mean of its divisors is an integer number (18814446).

Almost surely, 2^64506668 is an apocalyptic number.

It is an amenable number.

64506668 is a deficient number, since it is larger than the sum of its proper divisors (48380008).

64506668 is a wasteful number, since it uses less digits than its factorization.

64506668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16126671 (or 16126669 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 41.

The square root of 64506668 is about 8031.6043229233. The cubic root of 64506668 is about 401.0527850117.

The spelling of 64506668 in words is "sixty-four million, five hundred six thousand, six hundred sixty-eight".